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Wimmer DS, Rießbeck KM, Seibald M, Baumann D, Wurst K, Heymann G, Huppertz H. The crystal structure and luminescence properties of the first lithium oxonitridolithosilicate Li 3SiNO 2:Eu 2+. Dalton Trans 2022; 51:16465-16478. [DOI: 10.1039/d2dt03064k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Obtained by a high temperature solid-state synthesis, the compound Li3SiNO2:Eu2+ was characterized via SCXRD, PXRD, and luminescence spectroscopy. This revealed a new structure type and interesting luminescence properties.
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Affiliation(s)
- Daniel S. Wimmer
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
| | - Kilian M. Rießbeck
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
| | - Markus Seibald
- ams-OSRAM International GmbH, Mittelstetter Weg 2, D-86830 Schwabmünchen, Germany
| | - Dominik Baumann
- ams-OSRAM International GmbH, Mittelstetter Weg 2, D-86830 Schwabmünchen, Germany
| | - Klaus Wurst
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
| | - Gunter Heymann
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
| | - Hubert Huppertz
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
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2
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Ulvestad A, Skare MO, Foss CE, Krogsæter H, Reichstein JF, Preston TJ, Mæhlen JP, Andersen HF, Koposov AY. Stoichiometry-Controlled Reversible Lithiation Capacity in Nanostructured Silicon Nitrides Enabled by in Situ Conversion Reaction. ACS NANO 2021; 15:16777-16787. [PMID: 34570977 PMCID: PMC8552487 DOI: 10.1021/acsnano.1c06927] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
In modern Li-based batteries, alloying anode materials have the potential to drastically improve the volumetric and specific energy storage capacity. For the past decade silicon has been viewed as a "Holy Grail" among these materials; however, severe stability issues limit its potential. Herein, we present amorphous substoichiometric silicon nitride (SiNx) as a convertible anode material, which allows overcoming the stability challenges associated with common alloying materials. Such material can be synthesized in a form of nanoparticles with seamlessly tunable chemical composition and particle size and, therefore, be used for the preparation of anodes for Li-based batteries directly through conventional slurry processing. Such SiNx materials were found to be capable of delivering high capacity that is controlled by the initial chemical composition of the nanoparticles. They exhibit an exceptional cycling stability, largely maintaining structural integrity of the nanoparticles and the complete electrodes, thus delivering stable electrochemical performance over the course of 1000 charge/discharge cycles. Such stability is achieved through the in situ conversion reaction, which was herein unambiguously confirmed by pair distribution function analysis of cycled SiNx nanoparticles revealing that active silicon domains and a stabilizing Li2SiN2 phase are formed in situ during the initial lithiation.
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Affiliation(s)
- Asbjørn Ulvestad
- Department
of Battery Technology, Institute for Energy
Technology, Instituttveien 18, NO-2027 Kjeller, Norway
| | - Marte O. Skare
- Department
of Battery Technology, Institute for Energy
Technology, Instituttveien 18, NO-2027 Kjeller, Norway
| | - Carl Erik Foss
- Department
of Battery Technology, Institute for Energy
Technology, Instituttveien 18, NO-2027 Kjeller, Norway
| | - Henrik Krogsæter
- Department
of Battery Technology, Institute for Energy
Technology, Instituttveien 18, NO-2027 Kjeller, Norway
- Department
of Materials Science and Engineering, Norwegian
University of Science and Technology, Alfred Getz vei 2, NO-7491 Trondheim, Norway
| | - Jakob F. Reichstein
- Department
of Battery Technology, Institute for Energy
Technology, Instituttveien 18, NO-2027 Kjeller, Norway
| | - Thomas J. Preston
- Department
of Battery Technology, Institute for Energy
Technology, Instituttveien 18, NO-2027 Kjeller, Norway
| | - Jan Petter Mæhlen
- Department
of Battery Technology, Institute for Energy
Technology, Instituttveien 18, NO-2027 Kjeller, Norway
| | - Hanne F. Andersen
- Department
of Battery Technology, Institute for Energy
Technology, Instituttveien 18, NO-2027 Kjeller, Norway
| | - Alexey Y. Koposov
- Department
of Battery Technology, Institute for Energy
Technology, Instituttveien 18, NO-2027 Kjeller, Norway
- Center
for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0371 Oslo, Norway
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3
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Kong Y, Song Z, Wang S, Xia Z, Liu Q. The Inductive Effect in Nitridosilicates and Oxysilicates and Its Effects on 5d Energy Levels of Ce3+. Inorg Chem 2018; 57:2320-2331. [DOI: 10.1021/acs.inorgchem.7b03253] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuwei Kong
- The Beijing Municipal Key Laboratory of New Energy Materials
and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Zhen Song
- The Beijing Municipal Key Laboratory of New Energy Materials
and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Shuxin Wang
- The Beijing Municipal Key Laboratory of New Energy Materials
and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Zhiguo Xia
- The Beijing Municipal Key Laboratory of New Energy Materials
and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Quanlin Liu
- The Beijing Municipal Key Laboratory of New Energy Materials
and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China
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